<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>



</body>


<script>
    var a;
    function create(){
        var num=5;
        console.log(num)
        return function(){
            console.log(num)
        }
    }
    create();

    a=create();
    a()
    setTimeout(function(){console.log(3)},400000)

</script>
</html>